Predicted to enable enzyme activator activity. Predicted to be involved in GPI anchor biosynthetic process and regulation of protein stability. Predicted to be located in endoplasmic reticulum. Predicted to be part of dolichol-phosphate-mannose synthase complex. Predicted to be integral component of endoplasmic reticulum membrane. Is expressed in several structures, including adipose tissue; alimentary system; eye; genitourinary system; and nervous system. Human ortholog(s) of this gene implicated in congenital disorder of glycosylation and muscular dystrophy-dystroglycanopathy. Orthologous to human DPM3 (dolichyl-phosphate mannosyltransferase subunit 3, regulatory). [provided by Alliance of Genome Resources, Apr 2022]